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e004cb2592
linux_dsm_epyc7002/drivers/target/iscsi/iscsi_target_parameters.h
Nicholas Bellinger e004cb2592 iscsi-target: Add base MaxXmitDataSegmentLength code 
This patch introduces a new per connection MaxXmitDataSegmentLength
parameter value used to represent the outgoing MaxRecvDataSegmentLength
that is actually sent over the wire during iSCSI login response back
to the initiator side.

It also adds a new MaxXmitDataSegmentLength configfs attribute to
represent this value within the existing TPG parameter group under
/sys/kernel/config/target/iscsi/$TARGETNAME/$TPGT/param/

Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Andy Grover <agrover@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-10-02 13:17:30 -07:00

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#ifndef ISCSI_PARAMETERS_H
#define ISCSI_PARAMETERS_H
struct iscsi_extra_response {
char key[64];
char value[32];
struct list_head er_list;
} ____cacheline_aligned;
struct iscsi_param {
char *name;
char *value;
u8 set_param;
u8 phase;
u8 scope;
u8 sender;
u8 type;
u8 use;
u16 type_range;
u32 state;
struct list_head p_list;
} ____cacheline_aligned;
extern int iscsi_login_rx_data(struct iscsi_conn *, char *, int);
extern int iscsi_login_tx_data(struct iscsi_conn *, char *, char *, int);
extern void iscsi_dump_conn_ops(struct iscsi_conn_ops *);
extern void iscsi_dump_sess_ops(struct iscsi_sess_ops *);
extern void iscsi_print_params(struct iscsi_param_list *);
extern int iscsi_create_default_params(struct iscsi_param_list **);
extern int iscsi_set_keys_to_negotiate(int, struct iscsi_param_list *);
extern int iscsi_set_keys_irrelevant_for_discovery(struct iscsi_param_list *);
extern int iscsi_copy_param_list(struct iscsi_param_list **,
struct iscsi_param_list *, int);
extern int iscsi_change_param_value(char *, struct iscsi_param_list *, int);
extern void iscsi_release_param_list(struct iscsi_param_list *);
extern struct iscsi_param *iscsi_find_param_from_key(char *, struct iscsi_param_list *);
extern int iscsi_extract_key_value(char *, char **, char **);
extern int iscsi_update_param_value(struct iscsi_param *, char *);
extern int iscsi_decode_text_input(u8, u8, char *, u32, struct iscsi_param_list *);
extern int iscsi_encode_text_output(u8, u8, char *, u32 *,
struct iscsi_param_list *);
extern int iscsi_check_negotiated_keys(struct iscsi_param_list *);
extern void iscsi_set_connection_parameters(struct iscsi_conn_ops *,
struct iscsi_param_list *);
extern void iscsi_set_session_parameters(struct iscsi_sess_ops *,
struct iscsi_param_list *, int);
#define YES "Yes"
#define NO "No"
#define ALL "All"
#define IRRELEVANT "Irrelevant"
#define NONE "None"
#define NOTUNDERSTOOD "NotUnderstood"
#define REJECT "Reject"
/*
* The Parameter Names.
*/
#define AUTHMETHOD "AuthMethod"
#define HEADERDIGEST "HeaderDigest"
#define DATADIGEST "DataDigest"
#define MAXCONNECTIONS "MaxConnections"
#define SENDTARGETS "SendTargets"
#define TARGETNAME "TargetName"
#define INITIATORNAME "InitiatorName"
#define TARGETALIAS "TargetAlias"
#define INITIATORALIAS "InitiatorAlias"
#define TARGETADDRESS "TargetAddress"
#define TARGETPORTALGROUPTAG "TargetPortalGroupTag"
#define INITIALR2T "InitialR2T"
#define IMMEDIATEDATA "ImmediateData"
#define MAXRECVDATASEGMENTLENGTH "MaxRecvDataSegmentLength"
#define MAXXMITDATASEGMENTLENGTH "MaxXmitDataSegmentLength"
#define MAXBURSTLENGTH "MaxBurstLength"
#define FIRSTBURSTLENGTH "FirstBurstLength"
#define DEFAULTTIME2WAIT "DefaultTime2Wait"
#define DEFAULTTIME2RETAIN "DefaultTime2Retain"
#define MAXOUTSTANDINGR2T "MaxOutstandingR2T"
#define DATAPDUINORDER "DataPDUInOrder"
#define DATASEQUENCEINORDER "DataSequenceInOrder"
#define ERRORRECOVERYLEVEL "ErrorRecoveryLevel"
#define SESSIONTYPE "SessionType"
#define IFMARKER "IFMarker"
#define OFMARKER "OFMarker"
#define IFMARKINT "IFMarkInt"
#define OFMARKINT "OFMarkInt"
#define X_EXTENSIONKEY "X-com.sbei.version"
#define X_EXTENSIONKEY_CISCO_NEW "X-com.cisco.protocol"
#define X_EXTENSIONKEY_CISCO_OLD "X-com.cisco.iscsi.draft"
/*
* For AuthMethod.
*/
#define KRB5 "KRB5"
#define SPKM1 "SPKM1"
#define SPKM2 "SPKM2"
#define SRP "SRP"
#define CHAP "CHAP"
/*
* Initial values for Parameter Negotiation.
*/
#define INITIAL_AUTHMETHOD CHAP
#define INITIAL_HEADERDIGEST "CRC32C,None"
#define INITIAL_DATADIGEST "CRC32C,None"
#define INITIAL_MAXCONNECTIONS "1"
#define INITIAL_SENDTARGETS ALL
#define INITIAL_TARGETNAME "LIO.Target"
#define INITIAL_INITIATORNAME "LIO.Initiator"
#define INITIAL_TARGETALIAS "LIO Target"
#define INITIAL_INITIATORALIAS "LIO Initiator"
#define INITIAL_TARGETADDRESS "0.0.0.0:0000,0"
#define INITIAL_TARGETPORTALGROUPTAG "1"
#define INITIAL_INITIALR2T YES
#define INITIAL_IMMEDIATEDATA YES
#define INITIAL_MAXRECVDATASEGMENTLENGTH "8192"
/*
* Match outgoing MXDSL default to incoming Open-iSCSI default
*/
#define INITIAL_MAXXMITDATASEGMENTLENGTH "262144"
#define INITIAL_MAXBURSTLENGTH "262144"
#define INITIAL_FIRSTBURSTLENGTH "65536"
#define INITIAL_DEFAULTTIME2WAIT "2"
#define INITIAL_DEFAULTTIME2RETAIN "20"
#define INITIAL_MAXOUTSTANDINGR2T "1"
#define INITIAL_DATAPDUINORDER YES
#define INITIAL_DATASEQUENCEINORDER YES
#define INITIAL_ERRORRECOVERYLEVEL "0"
#define INITIAL_SESSIONTYPE NORMAL
#define INITIAL_IFMARKER NO
#define INITIAL_OFMARKER NO
#define INITIAL_IFMARKINT "2048~65535"
#define INITIAL_OFMARKINT "2048~65535"
/*
* For [Header,Data]Digests.
*/
#define CRC32C "CRC32C"
/*
* For SessionType.
*/
#define DISCOVERY "Discovery"
#define NORMAL "Normal"
/*
* struct iscsi_param->use
*/
#define USE_LEADING_ONLY 0x01
#define USE_INITIAL_ONLY 0x02
#define USE_ALL 0x04
#define IS_USE_LEADING_ONLY(p) ((p)->use & USE_LEADING_ONLY)
#define IS_USE_INITIAL_ONLY(p) ((p)->use & USE_INITIAL_ONLY)
#define IS_USE_ALL(p) ((p)->use & USE_ALL)
#define SET_USE_INITIAL_ONLY(p) ((p)->use |= USE_INITIAL_ONLY)
/*
* struct iscsi_param->sender
*/
#define SENDER_INITIATOR 0x01
#define SENDER_TARGET 0x02
#define SENDER_BOTH 0x03
/* Used in iscsi_check_key() */
#define SENDER_RECEIVER 0x04
#define IS_SENDER_INITIATOR(p) ((p)->sender & SENDER_INITIATOR)
#define IS_SENDER_TARGET(p) ((p)->sender & SENDER_TARGET)
#define IS_SENDER_BOTH(p) ((p)->sender & SENDER_BOTH)
/*
* struct iscsi_param->scope
*/
#define SCOPE_CONNECTION_ONLY 0x01
#define SCOPE_SESSION_WIDE 0x02
#define IS_SCOPE_CONNECTION_ONLY(p) ((p)->scope & SCOPE_CONNECTION_ONLY)
#define IS_SCOPE_SESSION_WIDE(p) ((p)->scope & SCOPE_SESSION_WIDE)
/*
* struct iscsi_param->phase
*/
#define PHASE_SECURITY 0x01
#define PHASE_OPERATIONAL 0x02
#define PHASE_DECLARATIVE 0x04
#define PHASE_FFP0 0x08
#define IS_PHASE_SECURITY(p) ((p)->phase & PHASE_SECURITY)
#define IS_PHASE_OPERATIONAL(p) ((p)->phase & PHASE_OPERATIONAL)
#define IS_PHASE_DECLARATIVE(p) ((p)->phase & PHASE_DECLARATIVE)
#define IS_PHASE_FFP0(p) ((p)->phase & PHASE_FFP0)
/*
* struct iscsi_param->type
*/
#define TYPE_BOOL_AND 0x01
#define TYPE_BOOL_OR 0x02
#define TYPE_NUMBER 0x04
#define TYPE_NUMBER_RANGE 0x08
#define TYPE_STRING 0x10
#define TYPE_VALUE_LIST 0x20
#define IS_TYPE_BOOL_AND(p) ((p)->type & TYPE_BOOL_AND)
#define IS_TYPE_BOOL_OR(p) ((p)->type & TYPE_BOOL_OR)
#define IS_TYPE_NUMBER(p) ((p)->type & TYPE_NUMBER)
#define IS_TYPE_NUMBER_RANGE(p) ((p)->type & TYPE_NUMBER_RANGE)
#define IS_TYPE_STRING(p) ((p)->type & TYPE_STRING)
#define IS_TYPE_VALUE_LIST(p) ((p)->type & TYPE_VALUE_LIST)
/*
* struct iscsi_param->type_range
*/
#define TYPERANGE_BOOL_AND 0x0001
#define TYPERANGE_BOOL_OR 0x0002
#define TYPERANGE_0_TO_2 0x0004
#define TYPERANGE_0_TO_3600 0x0008
#define TYPERANGE_0_TO_32767 0x0010
#define TYPERANGE_0_TO_65535 0x0020
#define TYPERANGE_1_TO_65535 0x0040
#define TYPERANGE_2_TO_3600 0x0080
#define TYPERANGE_512_TO_16777215 0x0100
#define TYPERANGE_AUTH 0x0200
#define TYPERANGE_DIGEST 0x0400
#define TYPERANGE_ISCSINAME 0x0800
#define TYPERANGE_MARKINT 0x1000
#define TYPERANGE_SESSIONTYPE 0x2000
#define TYPERANGE_TARGETADDRESS 0x4000
#define TYPERANGE_UTF8 0x8000
#define IS_TYPERANGE_0_TO_2(p) ((p)->type_range & TYPERANGE_0_TO_2)
#define IS_TYPERANGE_0_TO_3600(p) ((p)->type_range & TYPERANGE_0_TO_3600)
#define IS_TYPERANGE_0_TO_32767(p) ((p)->type_range & TYPERANGE_0_TO_32767)
#define IS_TYPERANGE_0_TO_65535(p) ((p)->type_range & TYPERANGE_0_TO_65535)
#define IS_TYPERANGE_1_TO_65535(p) ((p)->type_range & TYPERANGE_1_TO_65535)
#define IS_TYPERANGE_2_TO_3600(p) ((p)->type_range & TYPERANGE_2_TO_3600)
#define IS_TYPERANGE_512_TO_16777215(p) ((p)->type_range & \
TYPERANGE_512_TO_16777215)
#define IS_TYPERANGE_AUTH_PARAM(p) ((p)->type_range & TYPERANGE_AUTH)
#define IS_TYPERANGE_DIGEST_PARAM(p) ((p)->type_range & TYPERANGE_DIGEST)
#define IS_TYPERANGE_SESSIONTYPE(p) ((p)->type_range & \
TYPERANGE_SESSIONTYPE)
/*
* struct iscsi_param->state
*/
#define PSTATE_ACCEPTOR 0x01
#define PSTATE_NEGOTIATE 0x02
#define PSTATE_PROPOSER 0x04
#define PSTATE_IRRELEVANT 0x08
#define PSTATE_REJECT 0x10
#define PSTATE_REPLY_OPTIONAL 0x20
#define PSTATE_RESPONSE_GOT 0x40
#define PSTATE_RESPONSE_SENT 0x80
#define IS_PSTATE_ACCEPTOR(p) ((p)->state & PSTATE_ACCEPTOR)
#define IS_PSTATE_NEGOTIATE(p) ((p)->state & PSTATE_NEGOTIATE)
#define IS_PSTATE_PROPOSER(p) ((p)->state & PSTATE_PROPOSER)
#define IS_PSTATE_IRRELEVANT(p) ((p)->state & PSTATE_IRRELEVANT)
#define IS_PSTATE_REJECT(p) ((p)->state & PSTATE_REJECT)
#define IS_PSTATE_REPLY_OPTIONAL(p) ((p)->state & PSTATE_REPLY_OPTIONAL)
#define IS_PSTATE_RESPONSE_GOT(p) ((p)->state & PSTATE_RESPONSE_GOT)
#define IS_PSTATE_RESPONSE_SENT(p) ((p)->state & PSTATE_RESPONSE_SENT)
#define SET_PSTATE_ACCEPTOR(p) ((p)->state |= PSTATE_ACCEPTOR)
#define SET_PSTATE_NEGOTIATE(p) ((p)->state |= PSTATE_NEGOTIATE)
#define SET_PSTATE_PROPOSER(p) ((p)->state |= PSTATE_PROPOSER)
#define SET_PSTATE_IRRELEVANT(p) ((p)->state |= PSTATE_IRRELEVANT)
#define SET_PSTATE_REJECT(p) ((p)->state |= PSTATE_REJECT)
#define SET_PSTATE_REPLY_OPTIONAL(p) ((p)->state |= PSTATE_REPLY_OPTIONAL)
#define SET_PSTATE_RESPONSE_GOT(p) ((p)->state |= PSTATE_RESPONSE_GOT)
#define SET_PSTATE_RESPONSE_SENT(p) ((p)->state |= PSTATE_RESPONSE_SENT)
#endif /* ISCSI_PARAMETERS_H */
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